The SerialEMCCD plugin to DigitalMicrograph is open source under the GNU General Public License (GPL) version 2.0, and may be modified and redistributed under the terms of this license. A copy of this license is in the file GPL.txt. This source can be found at http://bio3d.colorado.edu/SerialEM/SerialEMCCD The GMS2 configurations are currently compiled in Visual Studio 2010 with the 2008 (vc90) toolset. The GMS1 configuration is compiled in Visual Studio 2003. The 64-bit configurations require libraries in the SerialEMLibs repository, available at http://bio3d.colorado.edu/SerialEM/SerialEMLibs. This repository should be in an adjacent directory, unless the properties are changed to access the libraries from another location. These libraries include version 3 of the FFTW libraries, which are Copyright (c) 1997--1999 Massachusetts Institute of Technology, written by Matteo Frigo and Steven G. Johnson, and covered by the GPL license. Other libraries are shared with SerialEM and their license terms are described in the SerialEM Copyright.txt file.